Facture of phosphates



A. DUVALL. METHOD OF MIXING LIQUIDS WITH DUST 0R POWDER FOR THE MANU-PAOTURE 0P PHOSPHATES, AND FOR OTHER PURPOSES.

No.'86,289. Patented Jan. 26, 1869.

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ALFRED DUVALL, OF B-ALTI MORE, MARYLAND. Lettcrs Patent No. 86,289,dated January 26, 1869.

IMPROVED METHOD OF MIXING LIOUIDS WITH DUST OR POWDER FOR THE. NAHU-FACTURE 01" PHOSPHATES, AND FOR OTHER PURPOSES.

The Schedule referred to in these Letters Patent and making part of thesame.

any other pulverized substance, and, when necessary or desired, forquickly precipitating the .finest pulverized matter in a receiver; and Ido hereby declare that the following is a full, clear, and exactdescription of .the construction and operation thereofi-reference beingbad to the accompanying drawing, and letters of reference thereon,making apart of this specification, in whichthe figure is a longitudinalsection in elevation, being the only drawing deemed necessary. to fullyillustrate the principles involved.

To enable others skilled in mechanics to make and use myinvention, Iwill proceed to describe the construction and operation of the same.

The character of my invention, as shown by the accompanying' drawing,and described in this specification, consists in using a jet of steam orblast of air, created by a fan'or otherwise, blowing against or incontact with a column of vitriol, or other liquid, and the granulated orpulverized matter being treated, whether exhausted from a mill whilebeing pulverized, or descending from a spout and falling incontact withthe liquid used and the blast of steam or air.

A is the pipe, through which the material being treated is blown orexhausted, and into which the acid or liquid used passes, as also theblast of steam or air.

B, the spout, through which the granulated or pulverized matter, whennot exhausted, falls into the pipe into the pipe A.

D, a-valve, in the pipe G, by which the quantity of liquid being used isregulated or shutoff entirely.

E, a steam-pipe, connecting with the pipeA.

F, a valve, in the stcazn-pipeE.

G, a fan, with a pipe, H, connecting withthe pipe A.

I, a receiving-chamber. in which the matter beingtreated-is-precipitated.

J, a pulverizing-anill or chamber, connecting with the ,reverse endof,the pipe A.

Operation.

- The steam or air, whichever is being ured, is forced into the pipe A,creating a blast. The granulated or pulverized matter being treated andthe liquid being used are then let into the, pipe A, through the pipes Band 0, and, by means of the blast, are thoroughly mixed and blown intoand precipitated in the receiving-chamber I. If exhausting from a millor chamber, J, connected with the pipe A at the reverse end of thearrows, the pulverized matter from that point is exhausted, mixed, andprecipitatedin the chamber I. As will be nndcrstood'from the aforegoingdescription, the operation of mixing and precipitating may be carried onat the same time from the spouts B and O and the pulverizing-mill orchamber J at the reverse.

, of involving the "same general principles of construction oroperation.

Witnesses:

J. Y. ELY, A. LnsLm DUVALL.

ALFRED DUVALL.

